CN2127442Y

CN2127442Y - Bearing of upper roller

Info

Publication number: CN2127442Y
Application number: CN 92213968
Authority: CN
Inventors: 臧珊仙; 吴建国
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-05-25
Filing date: 1992-05-25
Publication date: 1993-02-24
Anticipated expiration: 2002-05-25

Abstract

The utility model relates to an upper roller bearing which is used for the textile machine, comprising a core axle 1, and bearings which are arranged at both ends of the core axle 1. The utility model is characterized in that a ball channel and a ball raceway of the inner wall of the casings 2 of the bearings of the both ends are changed to two ball channels 7 and 9 which are separately opposite with two channels which are arranged on the core axle. The ball 8 of a cage 4 is arranged in the channel, which reduces the positive pressure and the friction of the ball to the bearing casing, reduces the abrasion, reduces the backlash between the radial direction and the axial direction, and greatly improves the performance and the service life of the upper roller bearing.

Description

Bearing of upper roller

The utility model belongs to the Component of textile manufacturing machine.

Upper roller bearing is used for the reel cage drafter of frame, and it has a mandrel, and there is the bearing of symmetrical configuration at the mandrel two ends.

Existing upper roller bearing, the structure of its bearings at both ends is seen shown in Figure 1.There is mandrel 1 at the center, and an end of mandrel 1 is with two

ball retainers

2,5 at a distance of certain distance, and ball 3 is housed in the retainer 2, and retainer and ball outside are with cartridge housing 4.Cartridge housing 4 one ends have sealed cap 6, and its other end has the dust ring 7 that is loaded between mandrel and the cartridge housing.The side face of mandrel 1 one ends has two circular arc concave shape raceway grooves 8,9, and cartridge housing 4 inwall side faces have a circular arc raceway groove 10 relative with raceway groove 9.Ball in the retainer 5 simultaneously is embedded in the raceway groove 8, and the inwall of another side and cartridge housing 4 is tangent.When bearing rotated, ball 3 was a circumference with the movement locus of cartridge housing 4 inwall points of tangency, and this circumference is called raceway 11.In other words, promptly mandrel 1 one ends have two for the raceway groove 8,9 of ball 3 as rolling rail; The inwall of cartridge housing 4 has 10, one raceways 11 of a raceway groove.

Find in the practicality that the major defect of above-mentioned bearing structure is that raceway 11 is easy to wearing and tearing.This is that when high quick-action was changeed, ball was big in the positive pressure of radially passing to raceway because ball contacts for point with raceway.In contrast, ball is that face contacts with raceway groove, and the positive pressure of suffered ball is little, thereby raceway groove is not easy to wear.Because raceway is easy to wearing and tearing, radial and axial play increases to a certain degree, has only and whole upper roller bearing is scrapped and is changed, and badly influences the working life of upper roller bearing.

The purpose of this utility model is to overcome above-mentioned shortcoming, prolongs the working life of upper roller bearing, designs a kind of new upper roller bearing.

Its technical solution is that the raceway with existing upper roller bearing middle (center) bearing shell inwall changes raceway groove into, and promptly the cartridge housing inwall has two circular arc concave shape raceway grooves, and its position is relative respectively with two circular arc concave shape raceway grooves of said mandrel one end.

Because the original raceway of cartridge housing inwall changes raceway groove into, has increased surface of contact, has reduced positive pressure, has reduced wearing and tearing, thereby has prolonged the working life of upper roller bearing effectively.

Fig. 1 is the bearing sectional view of existing upper roller bearing;

Fig. 2 is a bearing sectional view of the present utility model;

See Fig. 2, this upper roller bearing is made of mandrel 1 and the bearing that is positioned at the symmetrical configuration at its two ends, the structure of bearings at both ends is respectively: the center be mandrel 1 ', there is cartridge housing 2 its outside, the one end has sealed cap 5, the other end has the dust ring 3 that is loaded between mandrel and the cartridge housing, be set with ball retainer 4 on the mandrel 1, ball 8 is arranged in the retainer 4, mandrel 1 has two

raceway grooves

6,10 along side face, the cartridge housing inwall has two raceway grooves 7,9 along side face, and raceway groove 7,9 is relative with

raceway groove

6,10 respectively, and the ball 8 in the retainer 4 is loaded on respectively among

raceway groove

6,7 and 10,9.

Through evidence, adopt the utility model, the play of upper roller bearing is reduced greatly, the actual measurement average data is:

The utility model has upper roller bearing now

0.005 millimeter 0.02 millimeter of radial internal clearance

0.05 millimeter 0.11 millimeter of axial internal clearance

Adopt the utility model compared to prior art, can improve more than 50% working life.

Claims

1, upper roller bearing, constitute by mandrel and the bearing that is positioned at the symmetrical configuration at its two ends, the structure of bearings at both ends is respectively: the center is a mandrel, there is cartridge housing the outside, the one end has sealed cap, the other end has the dust ring that is loaded between mandrel and the cartridge housing, be set with the retainer of device ball on the mandrel 1, mandrel has two raceway grooves along side face, it is characterized in that the cartridge housing inwall has two raceway grooves along side face, it is relative with two raceway grooves difference on the mandrel, and the ball in the said retainer is loaded in the said relative raceway groove.